Welcome to Journal of Agriculture,

Journal of Agriculture ›› 2019, Vol. 9 ›› Issue (2): 7-10.doi: 10.11923/j.issn.2095-4050.cjas17120009

Special Issue: 水稻 农业生态

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Resistance Analysis on Rice Sheath Blight of Rice in the First Accumulated Temperature Zone of Heilongjiang

  

  • Received:2017-12-11 Revised:2017-12-28 Accepted:2018-01-15 Online:2019-02-13 Published:2019-02-13

Abstract: Rice sheath blight of 55 rice varieties and germplasm resources were investigated adopting routine planting in field plot, in order to definite the occurrence of rice sheath blight in rice varieties and germplasm resources in the first accumulated temperature zone in Heilongjiang province, and discuss on the resistance type. The results indicated that: 55 rice varieties and germplasm resources had different degrees of rice sheath blight, average field disease cluster rate was 58.4%, amplitude 25.2%~100.0%, average disease index was 52.2, only ‘Songnian4’ expressed resistance, ‘Song538’、‘Songjing19’、‘Songnian1’、‘Songjing28’、‘Songjing48’、‘Song536’、‘Songjign3’、 ‘Songjign15’、‘98131’、‘Songjign10’、‘J36’、‘J39’、‘J42’ total 13 rice varieties expressed middle resistance, resistant rice took up 1.8%, middle resistant rice took up 23.6%, overall resistance ratio was 14:41.

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